Question: Which is the academic area of the PhD adviser of Vladimir Berkovich?
Paraphrase: In which field of study does Vladimir Berkovich serve as a PhD advisor?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q7938273 wdt:P184 ?X . ?X wdt:P101 ?answer}
Answer: algebra, number theory, mathematical physics, algebraic geometry, coding theory, theory of differential equations